Padlock



March 5, 1929. s. R. FRAIM 1,704,134

' PADLOCK Filed May 10, 1928 2 Sheets-Sheet 1 March 5, 1929.. s. R. FRAlM 1,704,184

' I PADLOCK Filed May 10, 1928 2 Sheets-Sheet '2 Fae-.5.

Patented Mar. 5, 1929.

course srA es rarest or'r cso SAMUEL'R. FRAIMOF nnnoasrnn, PENNSYLVANIA;

PADLOGK.

Application filed May 10,

each being capable of securely fastening the shackle within the padlock casing; one looking unit to engage the removable toe of the shackle, and the other locking unit to engage the toe as well the pivoted heel of the shackle to elfect a double locking of the padlock.

Another object of the invention is to so construct the locking units that they will be actuated in sequence in that unlocking same one will. be completely withdrawn from locked position before the other is actuated, and that the latter must be operated before the toe is disengaged, and moreover fully actuated by the key before the heel is disengaged and the too is free to be withdrawn trom the casing.

A further object is to so construct and arrange the locking units that there will be no occurence of malfunctioning due to undesired relative motion, or other disarrangement, or lack of return spring action.

With the foregoing and other objects in view, the invention consists in the combination of parts and in the details of construction hereinafter set forth, certain embodiments thereof being illustrated in the accompanying drawings, in which:

Figure 1 is a top planview of the padlock with the upper plate of the casing removed and locking mechanism locked;

Figure 2 a similar view showing a partial. key action with the locking mechanism partially unlocked namely the pivoted lever;

Figure 3 is a similar view showing the locking mechanism completely unlocked and the shackle released; v

Figure 4 is a view similar to Figure 3with the lever and change plate removed;

Figure 5 is a view in section taken along line 55 of Figure 1;

Figure 6 is a view of all the working elements of the assembly disassembled as Well 1928. Serial No. 276 781.

as the key, each being shown in detail in perspective. I

Referring more partimilarly to the draw ings, the device comprises a casing, the lower half of which is shown in the drawings at 1,'

in which there is located a stud 2 upon which a shackle Z} is pivotally mounted so as to allow the toe 5 of theshackle to'be swung into and out of the casing.

The mechanism for locking the shackle to the casing; consists mainly in a pivoted lever 9, and a slidably mounted bolt 10, each of which is adapted to engage opposite sides of the toe 5 of the shackle in locked relationtheupper side thereof; the purpose of which.

lug will appear later.

The bolt 10 is mounted on the stud 117 which fits in an elongated slot 16 formed "in the bolt, thereby adapting the bolt for sliding and rotarymovemcnt. The bolt is normally spring-actuated in a clockwise direction and in such a position that the stud 17 bears against the left extremity of the slot 16, by meansof a spring 26 coiled about the stud 17 and bearing against a casingstud 25 and an upstanding lug" 3 1 of the bolt 10. Figure 1 shows the locking mechanism en gaging the shackle in fully locked position.

The hook 15 of the lever9 is shown engaging the slot 5 of the nose 5 ofthe shackle while the hook 24 of the bolt 10 engages the same on the opposite side. The lug 12 of the lever 9 fits within a notch 14 of the bolt to guard against accidental relative movement of the two locking elements.

- As the key 32 is fitted on the key stud 30 and rotated to the position shown in Figure 2, the lower ward 33" has engaged the bearing surface 23 of the lever 9, rotating the latter in a counterclockwise direction against the action of the spring 21 and out of engagement with the nose of virtually locked relation.

in a lower plane with an oii set 20 there,

between. Figure 2 shows the key torn-hing the otl'set. 20. Upon further rotation of the key, the ward 8?, bearing against the oiiset 20, forces the bolt 10 to the right and the hook 2 l-v out 01 engagement with the nose of the shackle; the hook 28 out oi engagement with the stud 11; and the end 27 out of engagement with the heel otthe shackle, as the bolt slides to the right and pivots slightly on the stud 17 under the action of the spring 26.

This renders the shackle tree from the locking elements and the nose removable from the casing. make the release of the nose more positive upon the unlocking oi the shackle, there is provided a spring" 29 coiled about the stud 25 and bearing against the casing, the other end of the spring fitting behind the projection 6 to accomplish the desired result.

As a further expedient to avoid disarrangement and malfunction of the two main locking elements, there is arranged there between a thin stationary change plate 8. This change plate has an aperture 11 to receive the stud 11, a notch 17 to receive the stud 17, and a recess 25 to receive the stud 25, thus separating the body. portions of the two locking elements 9 and 10.

in connection with the operation of the locking mechanism, the stud. 11 is formed with a sharp corner extension 37 which atlects the engagement of the hook 28 to more accurately time and make simultaneous the engagement of the shackle by the bolt and lover. It will be understood from the foregoing description that, in locking the assembly, the toe of the shackle pushing down on the hooked portion 28 of the bolt 10 causes the hook 28 to finally pass the lower pointed surface of the stud l1 and at this instant the spring 26 forces the bolt forw; rd to securely the stud. The mechanism connot be locked until this operation is completed and the action of this hook 28 against the stud 1i withholds the entire mechanism from going into its locked position until the shackle pushes the bolt down far enough so that both the oolt and lever are timed to enter the notch in the toe of the shackle simi'iltaneously.

What I claim is-- 1. A padlock comprising a casing, a shackle, and a pair of locking units, said In order, however, to'

shackle having its heel pivoted and its toe free to be inserted in said casing, one of said locking units con'iprising a lever pivoted on a stud and normally spring actuated to engage the toeoii said shackle, the other locking unit comprising a bolt slidably and pivotally mounted on a. single stud and ad pied to engage the toe and heel of said shackle in looking relation, said bolt havin a hook member adapt d to engage the stud on which said lever is pivoted, a stationary change plate interposed between the main body portions of said lever and bolt, said lever and bolt being adapted to be actuated IGSPOCblVOlY and in sequence by the rotation of a key to release the lever from the toe and the bolt from the toe and heel and from the stud on which said lever is pivoted.

2. A padlock comprising a casing, a shackle, and a pair oi" locking units, said shackle having its heel pivoted and its toe free to be inserted in said casing, one of said locking units comprising a lever pivoted on a stud and norn'ially spring actuated to engage the toe of said sh; ckle, the other looking unit comprising a bolt slidably and pirotally mounted on a single stud and adapted to engage the toe and heel of said shackle in locking relation, said bolt having a. hook member adapteiil to engage the stud on which said lever pivoted, a stationary change plate interposed between the main body portions of said lever and bolt, said lever and bolt being adapted to be actuated respectively and in sequence by the rotation of a key to release the lever from the toe and the bolt from the toe and heel and from the stud on which said lever is pivoted, a spring bearing against said casing and said heel, by means of which the toe under pressure to be positively ejected upon the release 01" said locking elements from said shackle.

3. A padlock comprising a casing, a shackle, and a pair of locking units, said shackle having its heelpivoted and its toe tree to be inserted in said casing, one of said locking units comprising a pivoted lever norn'ially spring-actuated to engage the toe of: said shackle, the other locking lllllb comprising a slotted bolt slidably and pivotally mounted on a single stud and adapted to engage both the toe and heel of said shackle in locked relation, said lever and bolt having bearing surfaces adapted to be engaged in sequence by a key for disengaging said lever from the shackle toe and said bolt from said toe and said heel, respectively,

said bolt having a pair of spaced notches, a lug carried by said lever and adapted to engage one of said notches when the assembly is locked. and the other not-ch when unlocked for the purpose of preventing relatlve movement oi said lever and bolt in locking relation, said bolt having a hook member adapted to engage the stud on which i said lever is pivoted, a stationary change plate interposed between the main body portions of said lever and bolt, said, lever and bolt being adapted to be actuated respectively and in sequence by the rotation of a key to release the lever from thetoe and the bolt from the toe and heel and from the stud on which said lever is pivoted, said bolt having a pair of spaced notches,a

lug carried by said lever and adapted to en gage one of said notches'vvhen the assembly is locked and the other notc-hwhen unlocked for the purpose of preventing relative movement of said lever and bolt in either instance until said lever is actuated either by key or shackle.

5. A padlock comprising a casing, a shackle, and a pair of locking units, said shackle having-its heel pivotedand its toe tree to be inserted in said casing, one of said locking units comprising a lever pivoted on a stud and normally spring actuated to engage the toe of said shackle, the other locking unit comprising a bolt slidably and pivotally mounted on a single stud, and adapted to engage the toe and heel of said shackle in looking relation, said bolt having a hook member adapted to engage the stud on which said lever is pivoted a stationary change plate interposed between the main body portions of said lever and bolt, said lever and bolt being adapted to be actuated, respectively, and in sequence by the rotation of a key to release the lever from the toe and the bolt from the toe and heel and from the stud on which said lever is pivoted, a spring bearing against said casing and said heel, by means of which the toe is under pressure to be positively ejected upon the release of said locking elements from said shackle, said bolt having a pair of spaced notches, a lug carried by said lever and adapted to engage one of said notches when the assembly is locked, and the other notch when unlocked for the purpose of preventing relative movement of said lever and bolt in either instance until said lever is actuated either by key or shackle.

6. A padlock comprising a casing, a pivoted shackle, and a pair of locking elements superimposed one upon the other With a stationary change plate therebetween, means carried by one of'saidlocking elements for coacting with theother to prevent relative lateral movement of said elementsavhen they are in locked and unlocked position.

7, A padlockcomprising a casing, a pi voted shackle, and a pair of locking elements superimposed one upon the other With a stationary changeplate therebetvveen, means carried, by one ol said locking elements for ceacting with the other to prevent relative lateral movement of said elements henthey, are in locked and unlocked position, said means being releasable'from locked engagement onlyupon the actuationof the element carrying the same.

8. A padlockcomprising a casing, a pivoted shackle, and a pair of locking elements r superimposed one upon the other With a stationary change platetherebetweenp means carried by one of said locking elements for coacting With the other to prevent relative f lateral movement ol said elements when they are in lockedand unlocked position, both of said elements being adapted to'engage the toe and one of said elements being adapted to engage the heel of said shackle, said elements beingoperable separately and in sequence by a single key to release first one element from the toe and the other element from said toe and heel, respectively.

9. A padlock comprising a casing, a pivoted shackle, and a pairot locking elements superimposed one upon the other With a stationary change plate therebetween, means carried by one of said locking elements for coacting with the other to prevent relative lateral movement of said elements When they are in locked and unlocked position, said means being releasable from locked engagement only upon the actuation of the element carrying same, both of said elements being adapted to engage the toe, and one of sit-ion.

, 10. A padlock comprising a casing, a pivoted shackle, and a pair of locking elements, both of said elements being adapted to engage the toe and one of said elements being adapted to engage at its one endrthe heel of said shackle and at its other end a station ary member of said casing all in locked relation, said elements being operable separately and in sequence by a single key to release first one element from the toe and then the other element from the tee, from the stationary member of said casing,and from the heel of said shackle, respectively.

11. A padlock comprising a casing, a pivto engage, at its one end, the heel of said shackle and at its other end a. stationary member of said casing all in locked relation, said elements being operable separately and in sequence by a single key to release first one element from the toe and then the other element from the toe, said stationary me1n ber of the casing, and the heel of said shackle respectively, means carried by one of said locking elements for eoacting with the other to prevent relative lateral movementof said elements when they are in locked and unlocked position.

12. A padlock comprising casing, a pivoted shackle, and a pair of locking elements superimposed one upon the other with a stationary change plate therebetween, both of said elements being adapted to engage the toe and one of said elements being adapted to engage, at its one end, the heel of said shackle and at its other end a stationary member of said casing all in locked relation, said elements being operable separately and in sequence by a single key to release first one element from the toe and then the other element fromthe toe, said stationary member of the casin and the heel of said shackle respectively, means carried by one of said locking elements for coaoting with the other to prevent relative lateral movement of said elements when they are in locked and unlocked position, said means being releasable from locked engagement on ly upon the actuation of the element carrying same.

13. A padlock comprising a casing, a pivoted shackle and a pair of locking elements, both of said elements being adapted to engage the toe and one of said elements being adapted to engage, atits one end the heel of said shackle and at its other end a stud all in locked relation, said stud being angular in its contour and of such dimensions and so arranged with respect to said bolt, that the shackle upondownward pressure upon said bolt is engageable in locked relation upon and subsequent to the locked engagement of said bolt with said stud.

In testimony whereof I affix my signature.

SAMUEL R. FRAIM. 

